Abstract
The Vacuum pump composed of the variable lead screw is noticed as a potential one that has high power efficiency. In case of the variable lead screw, the grinding wheel has only a point contact with the screw surface. One of the authors tried the grinding by the method that has easy way of calculating the contact point of the mating surfaces. The try resulted in the interference of the grinding wheel and the screw. Accordingly, this paper proposes another way of positioning of grinding wheel and analyzing the contact point. This paper discusses the interference in the axial plane of grinding wheel for the convenience of the wheel design. Then, size and pose of grinding wheel that could avoid the interference are examined numerically. The proposed setting method is clarified to be effective for the interference avoidance. The limitation of pose change of grinding wheel is showed in the relation with the interfered position of surfaces.
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